Fellow monks,
I'm developing a script that will retrieve log files via a raptor (firewall) specific application called 'remotelogfile'. Goal: Fork a predetermined amount of child processes, each using the remotelogfile utility for simultaneous collection. The next child process must wait to be spawned until the number of child processes goes below the predetermined amount of children. Caveat: I can't do a collection of all firewalls listed in my array at the same time, i.e. - the wait. Questions: One - how can I make the script wait until all child processes have finished, before exiting? Two - should I be decrementing the $counter every time a loop completes Three - is there a better way to go about doing this?
Here's a perlmonks friendly version of what I have so far...
my($num_procs)='3';
my($counter)='0';
foreach my $fw qw(fw1 fw2 fw3 fw4 fw5){
$counter++;
if($counter <= $num_procs){
&do_stuff($fw);
}
else{
wait;
&do_stuff($fw);
}
}
sub do_stuff{
my($fw)=shift;
local $SIG{CHLD}='IGNORE';
defined(my $pid=fork) || die "Can not fork!";
exec "remotelogfile $fw logfile > /var/$fw.log" if(!$pid);
}
Any help would be most appreciated. cheers! -Ev
Good judgement comes with experience. Unfortunately, the experience usually comes from bad judgement.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|